The Royal Gniezno Cathedral is a Brick Gothic cathedral located in the historic city of Gniezno that served as the coronation place for several Polish monarchs and as the seat of Polish church officials continuously for nearly 1000 years. Throughout its long and tragic history, the building stayed mostly intact, making it one of the oldest and most precious sacral monuments in Poland.

Gniezno is a city in central-western Poland, about 50 kilometres east of Poznań. Its population in 2021 was 66,769, making it the sixth-largest city in the Greater Poland Voivodeship. One of the Piast dynasty's chief cities, it was the first historical capital of Poland in the 10th century and early 11th century, and it was mentioned in 10th-century sources, possibly including the Dagome Iudex, as the capital of Piast Poland.